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705.0 Aluminum vs. C355.0 Aluminum

Both 705.0 aluminum and C355.0 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 705.0 aluminum and the bottom bar is C355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62 to 65
86 to 90
Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 8.4 to 10
2.7 to 3.8
Fatigue Strength, MPa 63 to 98
76 to 84
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 240 to 260
290 to 310
Tensile Strength: Yield (Proof), MPa 130
200 to 230

Thermal Properties

Latent Heat of Fusion, J/g 390
470
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
620
Melting Onset (Solidus), °C 610
570
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.3
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 24
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 8.4
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1170
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 20
7.5 to 9.8
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 130
290 to 380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
51
Strength to Weight: Axial, points 24 to 26
30 to 32
Strength to Weight: Bending, points 31 to 32
36 to 37
Thermal Diffusivity, mm2/s 55
60
Thermal Shock Resistance, points 11
13 to 14

Alloy Composition

Aluminum (Al), % 92.3 to 98.6
91.7 to 94.1
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0 to 0.2
1.0 to 1.5
Iron (Fe), % 0 to 0.8
0 to 0.2
Magnesium (Mg), % 1.4 to 1.8
0.4 to 0.6
Manganese (Mn), % 0 to 0.6
0 to 0.1
Silicon (Si), % 0 to 0.2
4.5 to 5.5
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 0 to 3.3
0 to 0.1
Residuals, % 0
0 to 0.15